Making simple gravity - GameCreators Forum

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Regnuar

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Posted: 23rd Feb 2010 18:02

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Hello, once again

I'm trying to make simple gravity/collision system, but without success. I tried to make;

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If object hit(player,terrain)=0 //Tried with if object collision... aswell.
position object 1,xpos#,ypos#-0.5,zpos#
else
position object 1,xpos#,ypos#+0.5,zpos#
endif

with that, i didn't even get player to warp. Any ideas how to fix this kinda problem?

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Madscientist

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Posted: 23rd Feb 2010 18:04

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Use sparky's collision, it's a lot faster and more precise.

Also I need to see some more code that that.

If it hasn't exploded yet, I haven't touched it.

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Hawkblood

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Posted: 23rd Feb 2010 19:49

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Quote: "i didn't even get player to warp."

What is "warp"?
Your code looks fine from what I can see.... We do need more of the code to be sure your not screwing yourself with the values somewhere..... Also, unless you are strictly controling the frame rate, you SHOULD use time as a factor in your physics. You have my sympathy if you don't like to use other people's code to accomplish something you want to do yourself, but in some cases you may just have to give up and accept it as a gift from the programming gods.

The fastest code is the code never written.

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Pharoseer

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Posted: 24th Feb 2010 04:40

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Are you actually changing ypos# each update with the new/current y position? Something like:

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ypos# = object position y(player)

If not, your position will only vary by plus or minus 0.5 from your starting value.

Also, I agree with Madscientist, Sparky's DLL is very fast compared to the built-in commands.

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Regnuar

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Posted: 24th Feb 2010 10:34 Edited at: 24th Feb 2010 13:45

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I'm not at home, but in the thing is something like this;

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Sync on
Sync rate 100

make object cube player, 50
load object "MEDIA\terrain.x"

do

xpos# = object position x(1) //EDIT: forgot these
ypos# = object position y(1)
zpos# = object position z(1)

point camera 0,xpos#,ypos#,zpos#
position camera 0,xpos#,ypos#+200,zpos#

If object hit(player,terrain)=0 //Tried with if object collision... aswell.
position object 1,xpos#,ypos#-0.5,zpos#
else
position object 1,xpos#,ypos#+0.5,zpos#
endif

sync
loop

this should be enough.

I'v installed the Sparky's DLL and i'v tried it few times but never got the sparkys code working. could someone give one piece of working code from sparky's to check i'v installed it right.

Cheers

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edge ogg

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Posted: 24th Feb 2010 10:53

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this should work

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If object collision(player,terrain)=0 
ypoz# = ypoz# - 0.5 : position object 1,xpos#,ypoz#,zpos#
else
position object 1,xpos#,ypos#+0.5,zpos#
endif

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Madscientist

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Posted: 24th Feb 2010 14:35 Edited at: 24th Feb 2010 14:36

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To get sparkey's code to work, go into the Downlaoded Collision Folder and copy and paste SC_Collision.dll into the Dark Basic Professional\Compiler\plugins-user folder.

Also, You never set player to =1

If it hasn't exploded yet, I haven't touched it.

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Posted: 24th Feb 2010 15:42 Edited at: 24th Feb 2010 15:43

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i always do, everything else is defined into groups for example trees are 200-299. I don't know what's the big deal if player is object number one, so please tell me. I'll check the sparky's dll directory right'o way and try once more.

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Madscientist

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Posted: 24th Feb 2010 19:39 Edited at: 24th Feb 2010 19:42

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Well it can really just be any number but you need to declare it which you didn't do in the code you provided.
Use this instead.

+ Code Snippet

Sync on
Sync rate 100

Player=1 `<<<<<Add this

make object cube player, 50
load object "MEDIA\terrain.x"

do

xpos# = object position x(1) //EDIT: forgot these
ypos# = object position y(1)
zpos# = object position z(1)

point camera 0,xpos#,ypos#,zpos#
position camera 0,xpos#,ypos#+200,zpos#

If object hit(player,terrain)=0 //Tried with if object collision... aswell.
position object 1,xpos#,ypos#-0.5,zpos#
else
position object 1,xpos#,ypos#+0.5,zpos#
endif

sync
loop

If it hasn't exploded yet, I haven't touched it.

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Regnuar

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Posted: 25th Feb 2010 21:29 Edited at: 25th Feb 2010 21:30

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Ok, i think sparky's collision is now installed to right place, gonna read one tutorial tomorrow and hope i learn how to use it. Thank you for answering and sorry for being idiot

oh and i copied the code from above and forgot to make variable for the player

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DarkBASIC Professional Discussion / Making simple gravity